Thanks, can you write down or snapshot the beam positions. I guess the striptool on hacsbc2 would be nice. Don't forgot to do ssh -Y or ssh -X when logging to adaq to take snapshot, I think adaql4 works fine some have ownership errors not sure why so you can try another adaq machine if HALOG fails on hacsbc2.
The absolute position values found seems a bit off. I will look at Pengjia plots for the calibration data he took after he posts them.